Switchboard apparatus



G. D. WOLF.

SWITCHBOARD APPARATUS.

APPLICATION lFILED FEB. 5, |917.

1 3 30, 5 65 Patented Feb. 10, 1920.

www l2/WW UNITED STATES PATENT OFFICE.

GEORGE D. WOLF, OF CHICAGO, ILLINOIS, ASSIGNOR TO KELLOGG- SWITCHBOARD AND Y SUPPLY COMPANY, 0F CHICAGO, ILLINOIS, CORPORATION OF ILLINOIS.

SWITCHBOARD APPARATUS.

Specification of Letters Patent.

Patented Feb. 1o, 1920.

original application led October 6, 1915, Serial No. 54,303. Divided and this application led February 5, 1917. Serial No. 146,665.

To all whom t may concern:

Be it known that I, GEORGE D. WOLF, a citizen of the United States of America, residing in Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Switchboard Apparatus, of which the following is a speciflj l application Serial No. 54,303, iled October 6, 1915, for telephone switchboard.

I so construct the front of the switchboard that a strip of line or trunk drops may appear next to a strip of lamp and jack springs, or they may be mounted in the reverse order without necessitating differently formed stile strips. The method commonly employed for mounting strips of drops, spring and lamp jacks, is to provide a stile strip having pins staked and spaced upon given centers, but due to the varying widths of the drop, spring and lamp strips, the stiles must be constructed with. the pins spaced on dill'erent centers totake care of the dilierent widths of strips. This method of mounting is also objectionable for the reason that no matter how much care is used in the manufacture of this equipment, it does not readily fit snugly together, without a considerable amount of labor and time in so making it fit. To overcome this difllculty, I provide stile strips which are of drawn stock and are provided with bolt members adapted to be slidably and adjustdescribed, I have obviated the above-mentioned objections and embodied desirable i'eatures and advantages all in a simple, eilivcient and economical manner; and to the accomplishment of the above objects and such others as may hereinafter appear, my invention consists in the novel details of construction, parts' and combination of parts hereinafter described and particularly pointed out in the appended claims.

For a better understanding of my invention, reference may be had to the accompanying drawing in which like reference characters denote like parts and in which- Figure l is a face view of a portion of a switchboard showing several assembled-lamp jack and jack spring strips with parts broken away to show the mounting means of the said strips;

Fig. 2 is a sectional view along* the line 2--2 of Fig. 1 showing the method of mounting the jack strips; f

Fig. 3 is a perspective view of they stile strips and clamping bolt:

Referring now more in detail to myy invention as illustrated in the accompanying drawing, I provide supporting strips commonlyknown as stile stripsv for suitably supporting the spring and lamp jack strips SJ and-LJ in the face of the switchboard. The

stile strips 1 are L-shaped, and for the pur-z pose of illustrating my invention, I show two banks of spring jacks and lamp jacks respectively mounted in the face of' the switchboard. The strip of spring jacks SJ and lamp jacks LJ are alternately mounted in each bank. The L-shaped stile strips 1 are mounted in juxtaposition and parallel to each other and when thus mounted the two stile strips form a T-shaped slot 4 into which bolts 5 may be inserted. The bolts 5 are provided with hexagonally shaped heads 6 which when inserted in the T-shaped slot 4, as shown in Fig. 3, permit vertical movement of the bolts 5 so that the said bolts, which are used for clamping thespring and lamp jack strips to the stile strip, may be adjusted according to the widths of the said I banks of jack strips 2 and 3, I show three pair of stile strips a, 6 and c, respectively, each made up of two L-shaped stile strips 1. The stile strips b are used as mounting means for the inside ends of the two adjacent jack strips while the stile strips a and c are used as mounting strips for the outside ends of' the two adjacent jack strips. To insert the bolt 5 into the T-shaped slot 4, the long axis of the hexagonally shaped head 6 is placed lapproximately parallel to the stile strip and inserted into the slot 4, the bolt is then given a quarter turn bringing the sides 61 and 62 of the head into engagement with the sides 41 and 42 of the slot thus permitting vertical movement of the bolt but not rotary movement thereof. To mount two adjacent jack strips in position upon the stile strips, they are placed in the position shown in F ig. 2 and the bolts 5 are then inserted into the T-shaped slot 4 in Ithe manner above described. A washer 8 is then placed over the bolt 5 and a nut 9 is then added to securely hold the jack strips in place. rIlhe bolts 5 which are inserted into the T-shaped slot 4 formed by the stiles b clamp the two inside ends of the adjacent jack strips, while the bolts 5, inserted in slots 4 of the stiles a and c, clamp the outside ends of the two adjacentfjack strips. The outside ends of the jack strips are also clamped by means of bolts 5 and nuts 9 through the medium of an angularly shaped lug 10 which is used to exert equal pressure upon the stile strips, when the jack strip ends are clamped to the stile strips a and 0 respectively. The sides 61 and 62 of the hexagonal heads 6 engage the sides 41 and 42 of the stile strips 1, when the nut 9 is turned to securely clamp the jack strip, thus preventing the bolt from turning. By the use of the stile strips 1 and bolts 5, any width of jack strip may be mounted, due to the vertical movement of the bolt in the T- shaped slot 4. If at any time a spring jack or lamp jack is 1n need of repairs, or another is to be inserted, all that is necessary is to loosen the nuts 9 which clamp them in place, give the bolt a slight turn to the right, then withdraw the bolt from the slot 4 thereby permitting the withdrawal of the jack strip from its mounting place. A finishing stile 11 is fastened to the stile strips 1 in any suitable manner as by the screws 12.

lVhile I have shown my invention adapted to one particular form, I do not Wish to limit myself to the exact construction and uses to which it has been put, but aim to cover all such changes and modiiications as come viiithin the spirit and scope of the appended c alms.

Having described my invention, what I claim as new and desire to secure by United States Letters Patent, is:

l. In a telephone switchboard, the combination with a jack frame, a bank of jack strips, a plurality of vertically disposed L- shaped jack stile strips suitably mounted in pairs to form T-shaped openings, and slidably mounted bolts supported in said T-shaped openings for adjustably supporting said jack strips in said jack frame.

2. In a telephone switchboard, the combination with a jack frame, a bank of jack strips, a plurality of vertically disposed L- shaped stile strips suitably mounted in pairs to form T-shaped openings, slidably mounted bolts supported in said T-shaped open- -ings, for adjustably supporting said jack strips in said jack frame, and {inishing stiles secured to said stile strips.

3. The combination with a telephone switchboard, of a mounting shelf having an opening therein, stile strips mounted in pairs in said opening, strips of apparatus, locking means coperating with said stile strips for adjustably securing said strips of apparatus in saidV mounting shaft, and inishing stiles secured to said stile strips.

4. In a telephone switchboard, the combination of a .mounting frame, pairs of L- shaped supporting strips mounted within said opening, jack strips carried by said supporting strips, locking means for each pair of mounting strips coperating with said jack strips for adjustably securing them to said mounting frame, and a finishing stile for each pair of supporting strips.

5. In a telephone switchboard, the combination with a jack frame, a bank of jack strips. a plurality of vertically disposed L- shaped jack stiles suitably mounted in pairs to form T-shaped openings, bolts associated with each pair of stiles suitably supported in said T-shaped openings for adjustably supporting said jack strips.

6. A device of the character described including adjacently mounted pairs of stile strips, strips of apparatus adapted to be secured between adjacent pairs of stile strips, a longitudinal recess formed by each pair of stile strips, and means adapted to fit into said recess for adjustably securing said strips of apparatus in position.,

7 A device of the character described including a jack frame, pairs of vertically disposed stile strips, vertical recesses formed by each pair of stile strips, jack strips adapted to be mounted in banks between said stile strips, and slidably mounted bolts supported in said vertical recesses for adjustably supporting said jack strips.

8. A deviceI of the character described including a jack frame, three pairs of adjacently mounted vertically disposed stile y strips, a vertical recess formed by each pair of stile strips, jack strips adapted to be mounted between adjacent pairs of stile strips, and locking means :for each pair of stile strips slidably mounted in said vertical recess for adjustably securing said jack strips in position, the looking means carried by the middle pair of stile strips being adapted to hold the ends of oppositely 10 mounted jack strips, While the locking means carried by the outside pairs of stile strips is adapted to hold only one end of the jack strips.

Signed by me at Chicago, in the county of Cook and State of Illinois, in the pres- 15 ence of two Witnesses.

GEORGE D. WOLF. Witnesses:

Gr. A. YANooHoWsKI, MARY R. RooHFoRD.

It is hereby vcertified that in Letters Patent No. 1,330,565, granted February 10, 1920, upon the application o1 George D. Wolf, of Chicago, Illinois, for an improvement in Switchboard Apparatus, an error appears in the printed specitication requiring correction as follows: Page 2, line 89, claim 3, for the Word shaft read shelf; andthat the said Letters Patent should be read With this correction therein that the same may conform to the record of the. case in the Patent Office. v l l Signed and sealed this 18th day of May, A. D., 1920.

[SEAL] M. H. COULSTON,

` Acting C'ommssoner of Patents. Cl. 179--91. 

